In the standardisation of internal building areas and location data project, the focus is on standardising internal building location data in Building Information Models. The work defines how the locations of building elements, materials and products are identified using spaces, space groups, storeys and zones, and how this information is recorded in the information model so that it can be used consistently for different purposes and at different project stages. The aim is to ensure that every space within a building can be individually identified, and that the location of building elements within those spaces can be defined and processed unambiguously using BIM-based data.